robertson



UNITED STATES PATENT OFFIOE.

T. J. W. ROBERTSON, OF NEW YORK, N. Y.

HAND-STAMP.

Specification forming' part of Letters Patent No. 18,249, dated September 22, 1857; Ressued December 12, 1871, No. 4,675.

To all whom t may concern:

Be it known that I, T. J. W. ROBERTSON, of the city, county, and State of New York, have invented a new and useful Improvement in Hand-Stamps; and I do hereby de clare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure 1 is a side sectional elevation of my improvement. Fig. 2 is a central sectional elevation of the same. Fig. 3 is a plan view of the bottom of the stamp.

Similar letters of reference indicate corresponding parts in the several figures.

This invention consists in the construction of hand-stamps in the manner herein described and represented. y

A, is the handle, to the bottom of which is attached a metallic forked shank B. To the bottom of this shank is attached a metallic ring C, said ring being secured to the shank by means of screw bolts (c). The lower part of the shank is also notched as shown at (I), b) in order to receive the ring C', and form a front bearing for it. Various other methods may be adopted at the pleasure of the maker, for attaching the ring C to the shank B.

Vhen the stamp is intended for a letter` stamp, the name of the post-office may be engraved upon the face of the ring C, as shown in Fig. 3. Y

D is a shaft, which passes horizontally through the shank B. Upon this shaft are placed three type wheels, (c, d, c) which re volve independent of each other, on the shaft D. The faces of these type wheels may be provided respectively with the names of the months of the year, and also the ten numerals.

The shaft D is arranged at such a distance from t-he face of the ring O, that the type wheels (c, d, e) may be turned so that the types upon said wheels will come in line or form a horizontal plane with t-he types on the ring C; and thus, when the face of the stamp is inked over by any suitable inking device and the stamp duly pressed upon a letter or other suitable substance, an impression will be left thereupon of the types contained on the ring O, and also of those types of the type wheels (c, d, e) that are in line with the types of the ring O.

It will be seen 4that only one line of types upon the type-wheels can simultaneously come into a horizontal plane with the types on the ring C; the remaining types being distributed around the peripheries of the type wheels (c, d, e), so that they can not touch the paper on which the impression is to be made.

E, is a lock-pin, which passes horizontally through the shank B, and also through the type wheels (c, d, c). The object of this pin Ii'. is to lock the type wheels, so that when any one line of types has been turned and brought into a horizontal plane with the types upon the ring O, the said line of types will be held fast and prevented from getting out of place.

By removing the bolt E, the combination of letters on the type wheels (c, (l, c) may be changed at pleasure.

F, is a space wheel or washer, upon the shaft D. It is there placed for the purpose of having a greater distance between the type wheels.

The stamp here shown has the face of its ring O, made in circular form. But it is obvious that the shape of the ring may be changed to suit the pleasure of the purchaser, wit-hout changing the general con struction of the stamp. The type wheels and ring may also be engraved with any suitable letters or figures.

This device is particularly useful for stamping letters, tickets, etc., where the words or number has to be constantly changed.

The common stamps are provided with movable or separate types secured by means of a screw. These types are liable to be lost or misplaced. But in my improvement the types are always at hand, ready for use.

Instead of the bolt E, for locking the type wheels, a small spring may be used; one end being attached to the shank B, and the other end pressing into the interstices between the lines of types upon the type wheels. The red portion in Fig. 2, shows a method of applying` such spring.

Various other modes of locking the type wheels can be adopted without substantially changing the construction of the article.

I do not claim, broadly, the employment of revolving type wheels for making impressions: for I am aware thatl such wheels have long been known and used. They are seen, for example, in nearly all book-paging machines. But to the best of my knowledge and belief, no hand-stamp like mine has ever been known or used.

Therefore having thus described my n Vention, what I claim as new, and desire to secure by Letters Patent, s-

rl`he construction of hand-stamps in the manner herein described and represented.

T. J. W. ROBERTSON. Witnesses:

A. E. BEACH, W. TUSCH.

[FIRST PRINTED 1912.] 

